/// <summary>
/// 创建md5摘要,规则是:按参数名称a-z排序,遇到空值的参数不参加签名
/// </summary>
/// <param name="key">参数名</param>
/// <param name="value">参数值</param>
/// key和value通常用于填充最后一组参数
/// <returns></returns>
public virtual string CreateMd5Sign(string key, string value)
{
StringBuilder sb = new StringBuilder();
ArrayList akeys = new ArrayList(Parameters.Keys);
akeys.Sort(ASCIISort.Create());
foreach (string k in akeys)
{
string v = (string)Parameters[k];
if (null != v && "".CompareTo(v) != 0 &&
"sign".CompareTo(k) != 0 && "key".CompareTo(k) != 0)
{
sb.Append(k + "=" + v + "&");
}
}
sb.Append(key + "=" + value);
string sign = EncryptHelper.GetMD5(sb.ToString(), GetCharset()).ToUpper();
return(sign);
}
/// <summary>
/// 创建md5摘要,规则是:按参数名称a-z排序,遇到空值的参数不参加签名
/// <para>key和value通常用于填充最后一组参数</para>
/// </summary>
/// <param name="key">参数名</param>
/// <param name="value">参数值</param>
/// <param name="workPaySignType">企业支付签名（workwx_sign）类型，默认为 None</param>
/// <returns></returns>
public virtual string CreateMd5Sign(string key, string value, WorkPaySignType workPaySignType = WorkPaySignType.None)
{
StringBuilder sb = new StringBuilder();
ArrayList akeys = new ArrayList(Parameters.Keys);
akeys.Sort(ASCIISort.Create());
foreach (string k in akeys)
{
string v = (string)Parameters[k];
if (null != v && "".CompareTo(v) != 0 &&
"sign".CompareTo(k) != 0
//&& "sign_type".CompareTo(k) != 0
&& "key".CompareTo(k) != 0)
{
//过滤企业支付特殊情况
if (workPaySignType == WorkPaySignType.WorkSendRedPackage)
{
//企业支付微信红包，仅保留以下字段
if ("act_name".CompareTo(k) != 0 &&
"mch_billno".CompareTo(k) != 0 &&
"mch_id".CompareTo(k) != 0 &&
"nonce_str".CompareTo(k) != 0 &&
"re_openid".CompareTo(k) != 0 &&
"total_amount".CompareTo(k) != 0 &&
"wxappid".CompareTo(k) != 0
)
{
continue;
}
}
else if (workPaySignType == WorkPaySignType.WorkPayApi)
{
//企业支付微信红包，仅保留以下字段
if ("amount".CompareTo(k) != 0 &&
"appid".CompareTo(k) != 0 &&
"desc".CompareTo(k) != 0 &&
"mch_id".CompareTo(k) != 0 &&
"nonce_str".CompareTo(k) != 0 &&
"openid".CompareTo(k) != 0 &&
"partner_trade_no".CompareTo(k) != 0 &&
"ww_msg_type".CompareTo(k) != 0
)
{
continue;
}
}
sb.Append(k + "=" + v + "&");
}
}
sb.Append(key + "=" + value);
//string sign = EncryptHelper.GetMD5(sb.ToString(), GetCharset()).ToUpper();
//编码强制使用UTF8：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=4_1
string sign = EncryptHelper.GetMD5(sb.ToString(), "UTF-8").ToUpper();
return(sign);
}
